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Synthesis of pure KTiOPO4 nanocrystallites and KTiOPO 4/SiO2 nanocomposite powders by sol-gel method

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3 Author(s)
Donglin Li ; Electron. Mater. Res. Lab., Xi''an Jiaotong Univ., Xi''an, China ; Liangying Zhang ; Yao, Xi

Pure KTiOPO4 nanocrystalline and xKTiOPO4-(1-x)SiO2 nanocomposite powders were successfully synthesized by sol-gel method using a homogeneous precursor solution prepared from (OC4H9)3PO, Ti(OC4H9)4, KAc and TEOS in 2-ethoxyethanol. The effect of solution temperature and the mole ratio of water to alkoxides on the organic precursors and the formation of KTP nanocrystallite were studied. The chemical bonds of precursors were studied by FT-IR spectra. The decomposition of gels was studied using TGA-DTA, and XRD. The DTA and XRD studies reveal that the precipitated powders and gel powders crystallized directly to KTP nanocrystallites above 600°C in air. The crystallization temperature increases with increasing SiO2 content. The particle size and micrographs of KTP nanocrystallites were examined by TEM

Published in:

Electrets, 1996. (ISE 9), 9th International Symposium on

Date of Conference:

25-30 Sep 1996

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